---
product_id: 63239442
title: "Check valve 1/2\"inch-PEX Plastic Barb X Barb, \"PTFE\" Ball Stop with \"Viton O Ring\" for Positive Fluid Stop."
brand: "i flow h2o"
price: "C$2289"
currency: NIO
in_stock: true
reviews_count: 8
url: https://www.desertcart.ni/products/63239442-check-valve-1-2inch-pex-plastic-barb-x-barb-ptfe
store_origin: NI
region: Nicaragua
---

# Fluid Control Secure Seal Easy Install Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop.

**Brand:** i flow h2o
**Price:** C$2289
**Availability:** ✅ In Stock

## Summary

> 💡 Stop the Flow, Not Your Progress!

## Quick Answers

- **What is this?** Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. by i flow h2o
- **How much does it cost?** C$2289 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/63239442-check-valve-1-2inch-pex-plastic-barb-x-barb-ptfe)

## Best For

- i flow h2o enthusiasts

## Why This Product

- Trusted i flow h2o brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🔧 Hassle-Free Setup:** Quick connection for seamless installation.
- • **🚫 Prevents Backflow:** Say goodbye to unwanted fluid returns!
- • **✅ Compliance Guaranteed:** NSF listed for your peace of mind.
- • **🌊 Versatile Applications:** Perfect for water, fuel, and more!
- • **🔥 High-Performance Rating:** Withstands up to 200°F and 200 PSI!

## Overview

The i Flow H2O 1/2" PEX Check Valve is a robust, NSF-listed solution designed to prevent backflow in various applications, including potable water systems and fuel lines. With a durable plastic construction and a high-performance rating, it ensures reliable fluid control while being easy to install.

## Description

Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop.

## Features

- ✅ PROBLEM IT SOLVES; Its an in-line one-way automatic valve stop, which prevents liquid-fluid from back-flowing, returning or loss of prime in a water, recirculating sys or fuel line. valvula de retencion agua plastico.
- ✅ IN-LINE USES; Can safely be used in Potable water, Fish aquarium water filter pumps, Pex tubing, Boat marine, RV, Hydroponics grow, Hydronic heating, and /or harsh fluids like fuel, diesel, oils and mild chemicals. NOT 4 POND WATER USE.
- ✅ COMPLIANT; NSF listed, meets UPC, IPC and cUPC standards, ASTMF-2159, PPSU, Lead free, non-corrosive, with a Dynamic "PTFE" solid ball stop and a "Viton/FKM-“O”- Ring inside for a "posi-seal-stop". Can withstand a high operating range of 200F and 200PSI, the "HIGHEST RATING IN IT'S CLASS".
- ✅ EASY INSTALLATION; Arrows point liquid flow direction, ACTUAL SIZE 15/32"x 15/32” OD, Barb x Barb push-in quick connection for Hose, Pex, cpvc. Its durable alloy body allows for mechanical stainless steel clamps or crimping-rings brass/copper to secure a tight connection.
- ✅ WARNING!!! "SIZE"- (OD)is smaller than 1/2"inch,look at "ACTUAL SIZE"!!..✅ WARRANTY; If it fails! Within 3yrs of purchase, WE WILL BUY IT BACK! See wrnty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Plastic |
| Brand | i Flow H2O |
| Exterior Finish | Plastic |
| Inlet Connection Size | 1/2"PEX Inches |
| Inlet Connection Type | Cross Linked Polyethylene |
| Outlet Connection Type | Barb x Barb |
| Maximum Operating Pressure | 80 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 1/2"PEX Inches |
| Manufacturer | I Flow H2O |
| Part Number | PCVB |
| Item Weight | 0.634 ounces |
| Country of Origin | USA |
| Item model number | 12chkvlv |
| Is Discontinued By Manufacturer | No |
| Size | 1/2" inch PEX |
| Color | Black |
| Style | PEX Check Valve 1/2" |
| Finish | Plastic |
| Pattern | .5 - cracking PSI |
| Shape | round |
| Installation Method | Barb x Barb |
| Item Package Quantity | 1 |
| Temperature Range | 200 Degrees Fahrenheit |
| Extension Length | 2 13/32" Inches |
| Outside Diameter | 15/32"x 15/32" Barb "OD" Inches |
| Handle Material | Plastic |
| Cutting Diameter | 0.63 Inches |
| Usage | Fluid Anti-Back Flow |
| Included Components | 1/2" PEX Check Valve |
| Batteries Included? | No |
| Batteries Required? | No |
| Assembled Diameter | 0.63 Inches |

## Images

![Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. - Image 1](https://m.media-amazon.com/images/I/51CE7UtoU9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great quality. Did exactly what it needed to do.
  

*by A***N on Reviewed in the United States on May 1, 2018*

Was looking for the best quality inline check valve for my fish tank. After searching through a bunch of check valves on amazon I came across this one, the build look high quality so I decided to give it a chance. I am glad I did. Installation is very easy, pushed into the hose and I secured it with 2 clamps. Water flow runs great with no back pressure unlike a cheap spring valve I previously tried. Tested the product by unplugging my pump and it stopped the water from back flowing from my larger tank. Great product, highly recommend.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Description confusing yet good valve
  

*by W***N on Reviewed in the United States on April 4, 2021*

I needed a check valve (CV) for a HVAC condensate pump that uses 3/8" ID vinyl drain hose.  I use the SimpleAir Clean Flow Tabs for HVAC Drain Line Treatment.  This CV uses a Teflon ball and Viton O-ring which will hold up to exposure to the Clean Flow Tabs.  Other CV's I looked at used NBR and EPDM rubber which does not.  This CV does not have a spring so cracking pressure is not an issue.  The CV is mounted vertically and is working good since the 20th March 2021.The description for this CV is horrible.  It begins with a 1/2" size which has nothing to do with this CV.  Then it says, "Barbed Plastic,Size(OD)15/32"" which is mixed words that should be placed elsewhere and the size is incorrect.  I measured the OD on each end: INLET: 0.437"; OUTLET: 0.431"; BARB: 0.471".  15/32" is 0.469". This fraction is close to the barb size yet not the diameter of each OD of the CV.Concerning photos: The best two photos are the 2nd showing the PTFE ball and Viton O-ring.  The 5th photo has a scale indicating the length of the CV.  The 7th photo of the orange plastic veneer caliper is silly because it shows nothing as it's not indicating a dimension on the CV. If a useful dimension needs to be shown then use a digital caliper measuring the barb.  A photo labelling the CV with dimensions would be ideal.  Then delete photos 5 and 7.The last of the description is about suggested applications.  These suggestions should located in the bullet items to reduce clutter in the description.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Use this on the inlet to your leaking RV pump
  

*by M***R on Reviewed in the United States on February 14, 2023*

If your RV is overflowing your tank when hooked to city water, its internal check valve has gone bad. Instead of replacing the RV water pump buy this & put it in the water line going to the RV pump & save yourself the $50-120 cost of a new water pump. We did & it fixed the problem. The RV pump works if the city water isn’t connected & now it doesn’t overflow the tank when it is connected.

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-17*